System for rendering liquids noncorrosive



- 1 V 1,614,148 1927' .1. F. MUSSELMAN sT-AI. I

SYSTEM FOR RENDERING LIQUIDS NONCORROSIVE Filed Mai-ch27. 1920 W'ITNESS: 1 INVENTOR.

I X M MAL ATTORNEY.

Patented Jan. 1.1, 1927.

UNITED STATES V 1,614,148 PATENT OFFICE.

JOSEPH F. MUSSELMAN, OF BRONXVILLE, NEW YORK, AND PERRY WEST, OF NEWARK, NEW JERSEY, ASSIGNORS, BY MESNE ASSIGNMENTS, TO ELLIOTT COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OI PENNSYLVANIAs SYSTEM -FOR RENDERING LIQUIDS NONCORROSIVE.

Application filed March 27, 1920. Serial No. 369,865.-

This invention relates to a system .for rendering water or other liquid non-corrosive and otherwise improvin their character by the removal of tie .dissolved oxygen and other corrosive gases or materials therefrom, thus rendering it corrosively inactive.

The object of this invention is to provide a simple, practical and eflicient system in which the active corrosive agents .and other dissolved gases are more or lessand for all practical purposes completely removed from the liquid without raising the temper.- ature of the same to the boiling point.

The invention consists in the novel arrangement and construction of the apparatus, as will appear more fully hereinafter" in connection with the description of the illustrative embodiment of the same shown in the accompanying drawings and particularly defined in the claims.

In thedrawings we have shown, in conventional diagrammatical form, a typical arrangement or adaptation'of our invention to the hot water system of a building, the object vbeing to prevent corrosion in the system of pipes through which water is delivered to the several parts of the building and also in the boiler for heating the water supply.

The usual hot water system for a building is indicated by the tank 1, usually located on the roof, from which the wateris sup-- plied through the pipe line 23 to the heat ing tanks or boilers or other heating means 4-4, from which the several floors are supplied through the pipe 5 and risers 6, 7, and 8. The return pipe 9 carries the circulation and surplus water back to'the boilers or heating tanks 44.

The water thus supplied in the ordinary "manner carries corrosive gases dissolved therein, such as oxygen and other free gases, carbonic acid gas and nitrogen, which, especially when'the water is heated and in motion, are very active corrosive agentswhich destroy the pipes and boiler and also produce gas pockets and slugs in a closed hot water system, with resulting interferences with the flow and circulation.

To accomplish these andother results, we provide a by-pass valve 10 in the supply line 2-3 which, when closed, causes the water to flow from the supply line 2 to a weirb x 11, which is of the usual construction and operation to maintain a constant rate of supply of water, i which flows therefrom through a, pipe 12 to a coil 13, the purpose of which will be explained hereinafter, and then through acoil 14 in an auxiliary heater 15 and through the pipe 16 to an inlet, preferably in the form of a spray device 17, to a chamber 18 in the upper part of a tank or container which is known as a dc-aerator and the chamber 18 as a dc-aerating chamber. This de-aerator is divided into upper and lower'chambers by a perforated partition 19, the upper chamber 18 being the de-aerating chamber just described and the lower chamber 20 being known as an exchange chamber and contains the coil 13 above referred to. r The de-aerator is preferably located at a point sufficiently above the hot water system of pipes to the 1 several floors to insure the flow of the water thereto without the use of a pump.

From the chamber 20 the Water passes through the pipes 21 and 22 to the supply pipe 3, on the opposite side of the valve 10, and thence throu h the hot water hereinbefore descrlbed.

The auxiliary heater 15, as-shown, comprises an outer shell or casing which encloses the coil 14 and to which hot water or steam may be supplied and returned or circulated through the pipes 23 and. 24, controlled by a thermostatlc' valve 25; or other suitable heating means may be used which are adapted to heat the water passing into the de-aerator to a predetermined temperature a few degrees below the boiling point.

The de-aerating chamber 18 is equipped with a series of pans 26 positioned under the inlet or spray device 17. These pans 26 are arranged to produ ce a cascade effect as the water overflows from one to the other and a spray device 17, connected to the inletend of the pipe 16 in the upper part of the chamber 18, ma be used in connection with or instead of t e pans, the object being to agitate and separate the water into small particles and thus cause the, corrosive gases to be given off. Y

-Afloat 27 in the chamber 18 is operatively connected by means-of a lever 28 and link 29 to a'valve 30 'in the Suppl line 12 and serves toregulate the level 0 the-water in e h ber 18 9 the lga er- A. e d

ing thermometer or temperature gauge 32. may be provided to record the temperature of the water in the chamber 18 as a check on the operation of the auxiliary heater 15.

The de-aerated Water fills the lower chamber 20, passing through the perforated wall 19, and surrounds the coil 13, giving ofi part of its heat thereto and heating the water passingtherethrough to the auxiliaryheater 15, thus reducing the amount of heating necessary to be done by the latter. \Ve have found by anumber of experiments with our system that it is only necessary to heat the water entering the de-aerating chamber 18 to a point a few degrees I under the boiling point and by the provision oflthe means for agitating and separating the water into small particles substantially all of the corrosive and other dissolved gases are driven OE and pass out through the vent pipe 31, located in the upper part of the de-aerating chamber 18.

The Water after passing through the deaerating chamber 18 is at ahigher temperature than is required for ordinary use and a part of this heat utilized in the exchange chamber 20 to heat the water passing through the coil 13, as above described, resulting in a greater economy in the operation of the auxiliary heating means 14-15 and also permitting the use of a heating means of less capacity without reducing the efiiciency of the system.

It will be obvious that our invention is adapted and useful for many purposes in addition to that described and shown in connection with the water supply of buildings, amon which may be mentioned the making of artificial ice, in which the formation of cores and opaqueness is avoided when the water is treated in accordance with this invention before freezing. When used for this purpose'the advantage of being able to deliver the Water at comparatively low temperature will be apparent.

Among many uses may be put may be mentioned the de-aeratin of the water used in power plants and in ustrial plants for the preventionof corrosion inturbines, economizcrs, boilers, piping, etc. and the elimination of the objectionable rusty water in dye works, tanneries, bleacheries and other industrial proc- BSSBS.

: tie-activating tank, or in a separate tank, ar-

ranged to be brought into contact withthe to which this system liquid, preferably after it has been agitated, or while being agitated. This not only expedites the process of the removal of the gases from the liquid but, more particularly, insures the efiectual removal of the remaining dissolved oxygen and other free corrosive gases from the liquid which remain after it has been subjected to the mechanical agitation process. This is especially useful where the volume of the liquid passing through the de-activator is large for a given time.

As many changes could be made in the above construction and arrangement and many apparently widely different embodiments of our invention designed without departing from the scope and spirit of the invention as defined in the appended claims, we intend that all matter contained in the above description or shown in the accompanying' drawings shall be interpreted as illustrative merely of an operative embodiment of our invention and not in a limiting sense.

"What we claim is 1. A system for rendering liquids noncorrosive, which comprises a deaerating tank having upper and lower communicating chambers, a series of pans positioned in said upper chamber to intercept the entering liquid and. arranged to cause the same to flow succesively from one pan to the next, means for heating the liquid before enterv ing said tank to a temperature lower than the boiling point, said means including an auxiliary casing and heating coil therein, means for automatically maintaining the liquid in the heating coil at a predetermined temperature, a coil positioned in said lower chamber in communication with the heating coil in the auxiliary chamber and surrounded by the heated liquid therein through which coil the liquid passes to the aforesaid heating means, and means for drawing oil the liquid from said lower chamber of the tank.-

2. A system for rendering liquids noncorrosive, which comprises a deaerating tank provided with means for agitating and separating the liquid supplied thereto into small particles, means including a heating casing for heating the liquid before enteringsaid tank to a temperature lower than the boiling point, means for automatically controlling the temperature to which said means heats the liquid, means for utilizing the heat from the liquid in the tank to raise the temperature of the liquid passing into the aforesaid heating means, said means including communicating heating coils positioned in the tank and chamber, and means for drawing off the liquid from said tank after agitation. I 7

3. system for rendering liquids noncorroslve, WhlCll comprises a deaerating tank provided with separating the liquid supplied thereto in'to' means" for agitating and said tank to a temperature a few de;

7 grees below the boiling point, means for automatically controlling the temperature to which said means heats the liquid, means for utilizing the heatfrom the llquid in the tank to raise the temperature of 'the liquid passing, to the aforesaid heating means, said means including communicatin heating coils positioned in the tank an chamber and means for drawing off the liquid from said tank after agitation.

4. A system for rendering liquids noncorrosive, which comprises a' deaerating tankhaving upper and lower communicating chambers, a series, of .pans positione in said upper chamber to interceptthe entering liquid and arranged 'to cause the same t1 flow successively from one pan to the heating the liquid before enter nex t,v-heating means through liquid passes before entering said tank m which the li uid is heated to a temperature lower than t e normal boiling point, means connected with said heating means for auto- -matically maintaining the liquid passing which said I In testimony whereof, we the said Jos- EruF. MUssELMAN and PERRY Wns'ighav'e signed our names to this specification, this 10th day of March, 1920. v

JOSEPH F. MUSSELMAN. PERRY WEST. 

